The Biochemical, Physiological, and Metabolic Evaluation of Human Subjects in a Life Support Systems Evaluator and on a Diet of Precooked Freeze Dehydrated Foods

Item

Title
The Biochemical, Physiological, and Metabolic Evaluation of Human Subjects in a Life Support Systems Evaluator and on a Diet of Precooked Freeze Dehydrated Foods
Date
1967
Index Abstract
Not Available
Photo Quality
Not Needed
Report Number
AMRL TR 67-12
Creator
Katchman, Bernard J.
Homer, George M.
Murphy, James P. F.
Dunco, Dorathea P.
Corporate Author
Miami Valley Hospital
Laboratory
Biomedical Laboratory
Extent
56
Identifier
AD0658031
Access Rights
Distribution of this document is unlimited. It may be released to the Clearinghouse, Department of Commerce, for sale to the general public.
Distribution Classification
1
Contract
AF 33(657)-11716
DoD Project
7164
DoD Task
716405
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Distribution Conflict
No
Abstract
A 6-week study with four college students as volunteer subjects was conducted for the purpose of evaluating the water, caloric, and protein requirements of individuals undergoing stresses imposed by simulated aerospace conditions. The subjects were confined in a controlled activity facility for 2 weeks and in the Life Support Systems Evaluator for 4 weeks during which time they wore an unpressurized MA-10 pressure suit 8 hours each day for 14 consecutive days. A 3-day cycle diet of pre-cooked freeze dehydrated foods was served at room temperature and was comprised of about 105 g of protein, 328 g of carbohydrate, 89 g of fat, and 2600 kcal per day. The daily requirement of water was 2200 ml per man day of which 700 ml were consumed ad libitum. The diet was highly acceptable and efficiently utilized. Only minimal body weight changes were observed. The nutrient intake of the diet was adequate in that a 70 kg man was maintained without any weight loss. Metabolic balances show excellent adjustment to the diet; all subjects were in positive balance for nitrogen and for the major inorganic constituents. All the clinical data including heart rate, blood pressure, and oral temperature were in the normal ranges and no significant differences were observed due to confinement in the Life Support Systems Evaluator. All subjects maintained excellent health throughout all the test periods.
Report Availability
Full text available
Date Issued
1967-07
Provenance
RAF Centre of Aviation Medicine
Type
report
Format
1 online resource
Media
AMRLTR67-012.pdf